Explanations:The question revolves around the geographical and cultural landmarks of Jammu and Kashmir, specifically focusing on Dal Lake in Srinagar. Dal Lake is a significant tourist attraction and is renowned for its houseboats, which are a unique feature of the region. These houseboats are not just a form of accommodation but also a cultural symbol of the area, offering visitors a traditional Kashmiri experience.
Another notable feature of Dal Lake is the world's only floating post office. This post office is situated on a houseboat and provides postal services to the local community and tourists. The floating post office is a testament to the innovative use of the lake's resources and adds to the cultural and historical significance of the region.
Regarding the historical figure Nagabhata I, it is important to note that he was a ruler of the Gurjara-Pratihara dynasty, which was a significant power in northern India during the early medieval period. The Gurjara-Pratiharas were known for their military prowess and their ability to establish a vast empire. They were not associated with the Chalukya clan, which was a different dynasty that ruled parts of southern and central India.
The Chalukya dynasty was known for its architectural achievements, particularly in the construction of temples and other religious structures. They were contemporaries of the Gurjara-Pratiharas but were not related to them in terms of lineage or political affiliation. Therefore, the statement that Nagabhata I belonged to the Chalukya clan is incorrect.
In summary, the correct answer is option D, which includes statements 1 and 3. Dal Lake is indeed known for its houseboats and the world's only floating post office, while the statement about Nagabhata I's affiliation with the Chalukya clan is false. Understanding the cultural and historical context of these landmarks and figures is crucial for correctly identifying the true statements in this question.